Who Will Save the 'How I Met Your Mother' Wedding? Because Someone Is Definitely Going to Ruin It! [Video]

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How I Met Your Mother
"Something New" -- Robin (Cobie Smulders, right) and Barney (Neil Patrick Harris, left) set off on their trip to Farhampton, the location of their wedding in the eighth season finale of HOW I MET YOUR MOTHER, Monday, May 13 (8:00-8:30 PM, ET/PT) on the CBS Television Network. Photo: Ron P. Jaffe/CBS © 2013 CBS Broadcasting, Inc. All Rights Reserved.

CBS just dropped a preview for the season premiere of "How I Met Your Mother," and it's already fraught with tension.

Barney and Robin are in a limousine on the way to their wedding, and they seem struck by a premonition that will almost certainly come true. "Someone's going to ruin this wedding," says Robin.

"It's just a question of who," replies Barney.

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It won't be "Game of Thrones" Red Wedding bad, but according to show co-creator Carter Bays, "Our ninth season will tell the epic story of the longest wedding weekend ever," so there's plenty of time for any number of horrible/hilarious things to go wrong.

"I'm going to ruin this wedding!" shouts Marshall from his aisle seat on a plane. "I'm going to ruin this wedding!" shouts Tim's face. "Tim's going to ruin this wedding!" shouts Lily's linebacker tackle.

Perhaps the only person not shouting is the girl with the bass guitar and yellow umbrella played by Cristin Milioti. Not yet, at least...

Season 9 of "How I Met Your Mother" premieres Sept. 23 on CBS.